Introduction - IBM p5 590 System Handbook

8.1 Introduction

All p5-590 and p5-595 configurations require the use of a Hardware
Management Console to manage hardware and low-level software functions.
There are some significant differences regarding the HMC connection to the
managed server with the p5-590 and p5-595 servers.
At least one HMC is mandatory, and two are recommended.
The first (or only) HMC is connected using a private network to BPC-A (Bulk
Power Controller).
The HMC must be setup to provide DHCP addresses on that private (eth0)
network.
A secondary (redundant) HMC is connected using a separate private network
to BPC-B.
That second HMC must be setup to use a different range of addresses for
DHCP.
Additional provision has to be made for a HMC connection to the BPC in a
powered expansion frame.
If there is a single managed server (with powered expansion frame) then no
additional LAN components are required. However, if there are multiple
managed servers, additional LAN switch(es) will be needed for the HMC
private networks.
The HMC is a pre-installed appliance and is available in a desktop configuration
or a rack-mount configuration.
The HMC provides a set of functions that are necessary to manage partition
configurations by communicating with the service processor, as follows:
Logical partitioning control
Capacity on Demand resource control
Creation or partition and system profiles
Boot, start, and stop actions for the system or individual partitions
Displaying system and partition status
In a non-partitionable system, the LED codes are displayed in the operator
panel. In a partitioned system, the operator panel shows the word LPAR
instead of any partition LED codes. Therefore, all LED codes for system
partitions are displayed over the HMC.
An imbedded DVD-RAM for creating and storing configuration backup
information
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